What is the impact of changing channel size in microfluidic devices?

  • Thread starter Thread starter frenchero
  • Start date Start date
  • Tags Tags
    Channel
AI Thread Summary
Changing the channel size in microfluidic devices significantly affects flow rate and back pressure. Enlarging a channel from 100µm to 2mm greatly reduces viscous friction, impacting fluidic resistance. The flow characteristics depend on whether other dimensions of the system are altered. Utilizing the simplified Navier-Stokes equation is recommended for analyzing these changes in microfluidics. Understanding these principles is crucial for optimizing device performance.
frenchero
Messages
21
Reaction score
0
HI!

I have a question about microfluidic devices. When you enlarge a channel, for example from 100µm to 2mm, is there a big variation of flow rate or back pressure? I can't find the equation to solve this issue.

Thank you
damien
 
Engineering news on Phys.org
100µm to 2mm dia will decrease the viscous friction many many times.
 
The channel dimension strongly influence the fluidic resistance of the system. it depend if you change or not the smaller dimension of the system. The better is to use the simplified navier stocke equation which work in microfluidic. You can find a tutorial about that at the following adress :
http://www.elveflow.com/cms.php?id_cms=24"

If you don't find the answer of you question here , just ask me and I would try to answers you.
 
Last edited by a moderator:
Thread 'I need a concave mirror with a focal length length of 150 feet?'

Thread 'I need a concave mirror with a focal length length of 150 feet?'

I need to cut down a 3 year old dead tree from top down so tree causes no damage with small pieces falling. I need a mirror with a focal length of 150 ft. 12" diameter to 36" diameter will work good but I can't think of any easy way to build it. Nothing like this for sale on Ebay. I have a 30" Fresnel lens that I use to burn stumps it works great. Tree service wants $2000.
View full post »

Thread 'Questions about the Tesla turbine'

Hi all, i have some questions about the tesla turbine: is a tesla turbine more efficient than a steam engine or a stirling engine ? about the discs of the tesla turbine warping because of the high speed rotations; does running the engine on a lower speed solve that or will the discs warp anyway after time ? what is the difference in efficiency between the tesla turbine running at high speed and running it at a lower speed ( as fast as possible but low enough to not warp de discs) and: i...
View full post »
Thread 'Where is my curb stop?'

Thread 'Where is my curb stop?'

My water meter is submerged under water for about 95% of the year. Today I took a photograph of the inside of my water meter box because today is one of the rare days that my water meter is not submerged in water. Here is the photograph that I took of my water meter with the cover on: Here is a photograph I took of my water meter with the cover off: I edited the photograph to draw a red circle around a knob on my water meter. Is that knob that I drew a red circle around my meter...
View full post »

Similar threads

Need help- calculating clearing of bubbles from a microfluidic channel
Replies
4
Views
2K
Reactor Channel Layout: RBMK, PWR, CANDU Comparison
Replies
1
Views
4K
Find hole size for allowable leak in pressure vessel
Replies
6
Views
3K
Ion Flow Through a Channel: Current and Charge
Replies
2
Views
2K
Pumping power calculation of a vertical closed-loop system
Replies
4
Views
3K
Cooling of a thick walled pipe transporting water
Replies
4
Views
2K
One fluid forcing another out in a microchannel
Replies
1
Views
1K
Spec'ing the power of heater for an atypical heat exchanger problem
Replies
22
Views
3K
Predicting flow rates of a pressure driven system
Replies
8
Views
2K
Physics of Water Pressure Regulators/Reducing Valves
Replies
4
Views
26K

Hot Threads

Recent Insights

Back
Top